Aaron j



(No Model.)

t A.. J. HULL.

PUMP.

Patentd Deo. 13,1881..

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UNTTnn STATES PATENT reifen@ AARON J. HULL, OF STERLING, ILLINOIS.

PUMP.

SPECIFICATION forming part of Letters Patent No. 250,817, dated December 13, 1881.

Application filed September 24, 1881. (No model.)

To all whom it may concern:

Be it known that I, AARON J. HULL, a citizen of the United States,residing at Sterling, in the county ofWhiteside and State of Illinois, have invented certain new and useful Improvements in Pumps; and Ido hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention pertains to that class of pumps which have the double function of lifting andv l spout b. Y

B is a short cylinder, having the chamber c, and attached in any suitable manner to the side of the stock A at such altitude as that the lower end of the cylinder B is submerged in the water. The operation of the pump-is equally complete if the entire cylinder B be submerged but it is sufficient if the waterline be any place above the lower end thereof.

Communication from the chamber c of the cylinder B to the chamber a of the stock A is had through the lateral orifice d of the former and the like opening e of the latter.

On the outer end of the orifice l is seated the valve f, opening toward thestock A, and which permits the passage of the water from the cylinder B to the stock A, but prevents its return. Near the bottom and around the inner circumference of the cylinder B, I form the annular ledge g, having a square face on its lower side, against which abuts the upper end of the valve-seat 71.

C is a valve seated on the valve-seat h and opening upward into the chamber c.

D is a short plug fitted into the lower end of the chamber c and provided with the vertical chamber z', which communicates through the valve C with the chamber c of the cylinder B. The purpose of the plug D is to secure the valve C in place and at the same. time to permit the passage of the water. E is a valveless bucket or piston playing in the chamber a, and provided at each end with the flexible wings lc k, made of leather or other suitable material, and having its circumference between its two ends reduced so as to form the annular chamber l. The bucket E is operated in the usual way by means of the piston-rod m and lever 11, the latter being fulcrumed, as shown, to the pump-stock A. t

The purpose and advantage of having the double wings k k is that such wings act alternately to exclude the air-the upper win g when the bucket E is lifted and the lower wing when such bucket is forced down. When the bucketE is raised the upper valve 7c ad- 'usts itself against the walls ofthe chamber c, excludes the superincumbent air, and the water is drawn into the chamber c. As the bucket E is forced downward the lower wing k adjusts itself against the walls of the chamber c and forces the water through the openings d and c into the chamber a, from whence the Water is ultimately discharged through the spout b, thus furnishing in one piston-head a lifting and forcing apparatus.

The purpose in providing the chamber Z is to furnish an apartment which is filled with water, thus assisting to exclude the air from the surface of the water beneath.

The advantage of locating the lower valve below the normal water-line is that it absolutely precludes any leakage, and there thus being no valve in the pump which when the pump is at rest is relied upon to hold the water above its normal surface, or which it isim- 'portant should do so, no material deterioration of the pump can result from periods of inaction.

The cylinder B 'with its appendages can be duplicated and one placed on each side ofthe piston-rod m, lever n, and pump-stock A, all ro stock A, and, the action of one alternating the arranged substantially as shown, and for the other, a continuous stream can be thrown. purpose specied.

What Iclaim as new, and desire to secure by In testimony whereof I affix my signatur Letters Patent of the United States, isin presence of two witnesses.

In a pump, the combination of the cylinder AARON J. HULL. B, provided with the ledge g, the bucket E, Witnesses: having concave sides and alternately-operat- C. L. SHELDON, ing adjustable wings 7c lr, the valve C, plug D, W. STAGER. 

